The Lincoln Memorial Reflecting Pool in Washington, D.C., has developed a green algae bloom shortly after a costly renovation project [1].
The situation highlights the technical challenges of maintaining large-scale urban water features and the political visibility of the "Make D.C. Beautiful Again" initiative.
President Donald Trump (R-FL) initiated the restoration as part of a broader effort to beautify the capital. The project involved painting the bottom of the pool and refilling the water to restore its appearance [1, 2]. A 2,000-foot section of the pool was targeted during these renovations [3].
Officials turned the spigot to refill the pool on a Thursday in early June [4]. However, the water quickly shifted from the intended blue to a green hue due to algae growth [1].
"I’m very proud of the work we’re doing on the Lincoln Memorial Reflecting Pool," Trump said [3].
Despite the initial pride in the project, the outcome has left local residents and tourists disappointed. The financial investment in the project was significant, with the renovation costing $14 million [1].
Trump said the administration spent $14 million to make the pool blue, but it turned green instead [1].
“We spent $14 million to make the pool blue, and now it’s green.”
The rapid growth of algae in the Reflecting Pool suggests a failure in the chemical balance or filtration system used during the refilling process. Because the project was tied to a high-profile political branding initiative, the aesthetic failure transforms a routine infrastructure project into a public symbol of inefficiency.
